U.S. patent application number 10/466293 was filed with the patent office on 2004-07-29 for arrangement for the gas-tight fixing of an inlet manifold with a connector flange to the cylinder head of an internal combustion engine.
Invention is credited to Faurien Des Places, Fabrice, Jeanne, Olivier, Parendel, Xavier.
Application Number | 20040145121 10/466293 |
Document ID | / |
Family ID | 7670208 |
Filed Date | 2004-07-29 |
United States Patent
Application |
20040145121 |
Kind Code |
A1 |
Faurien Des Places, Fabrice ;
et al. |
July 29, 2004 |
Arrangement for the gas-tight fixing of an inlet manifold with a
connector flange to the cylinder head of an internal combustion
engine
Abstract
Arrangement for the gas-tight fixing of an inlet manifold (1)
with a connector flange to the cylinder head (2) of an internal
combustion engine, with a sealing plate (3), arranged between the
connector flange of the inlet manifold (1) and the cylinder head
(2), in which at least one air passage (4, 5, 6, 7) for the at
least one inlet tube of the inlet manifold (1) is embodied, with
first connecting means (9) for connecting the sealing plate (3) to
the inlet manifold (1), which are arranged in housings (10), in or
on the sealing plate (3), with second connecting means for
connecting the connector flange (1) and/or the sealing plate (3) to
the cylinder head (2). A first sealing means (19) is provided on
the sealing plate (3) on the one side (18) thereof, surrounding the
at least one air passage (4, 5, 6, 7), for fitting to the inlet
manifold (1), whereby at least one elastic element (13) is provided
between the first connecting means (9) and the sealing plate
(3).
Inventors: |
Faurien Des Places, Fabrice;
(Couzeix, FR) ; Jeanne, Olivier; (Junien, FR)
; Parendel, Xavier; (Ambazac, FR) |
Correspondence
Address: |
DAVIDSON, DAVIDSON & KAPPEL, LLC
485 SEVENTH AVENUE, 14TH FLOOR
NEW YORK
NY
10018
US
|
Family ID: |
7670208 |
Appl. No.: |
10/466293 |
Filed: |
March 22, 2004 |
PCT Filed: |
December 20, 2001 |
PCT NO: |
PCT/EP01/15167 |
Current U.S.
Class: |
277/592 |
Current CPC
Class: |
F16J 15/121 20130101;
Y10S 277/916 20130101; F02M 35/10085 20130101; F02M 35/10301
20130101; F16J 15/061 20130101; F02M 35/10321 20130101; F02F 11/002
20130101 |
Class at
Publication: |
277/592 |
International
Class: |
F02F 011/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 10, 2001 |
DE |
101009348 |
Claims
What is claimed is:
1. A system for the gas-tight mounting of an intake manifold (1),
having a connecting flange, on the cylinder head (2) of an internal
combustion engine, including a gasket sheet (3) which is situated
between the connector flange of the intake manifold (1) and the
cylinder head (2) and which has at least one air passage (4, 5, 6,
7) for the at least one intake pipe of the intake manifold (1),
having first connecting means (9) for connecting the sealing plate
(3) to the intake manifold (1) which are situated in sockets (10)
in or on the sealing plate (3), having second connecting means for
connecting the connector flange (1) and/or the sealing plate (3) to
the cylinder head (2), first sealing means (19) being provided on
one side (18) of the sealing plate (3) around the at least one air
passage (4, 5, 6, 7) intended to rest on the intake manifold (1),
at least one elastic element (13) being provided which acts between
the first connecting means (9) and the sealing plate (3), the first
sealing means (19) being designed as sealing ribs which have a
sealing section (20) and a moving section (22), and the first
connecting means (9) including the at least one elastic element
(13) and the first sealing means (19) being designed and situated
in such a way that a vibratory relative movement is made possible
between the sealing plate (3) and the intake manifold (1).
2. The system as recited in claim 1, wherein the sealing plate (3)
is situated at a distance from the connector flange of the intake
manifold (1).
3. The system as recited in claim 1 or claim 2, wherein the sealing
ribs (19) are stressed by compression means (22) which are situated
on the intake manifold (1).
4. The system as recited in claim 3, wherein, in the installed
state, the moving section (21) is essentially stress-free or is
stressed to a lesser extent than the sealing section (20) which is
stressed by the compression means (22).
5. The system as recited in claim 3 or claim 4, wherein the
compression means (22) stress the sealing section (20) in one
direction, i.e., essentially parallel to the sealing plate (3).
6. The system as recited in one of claims 3 through 5, wherein the
compression means (22) are grooves, formed on the mounting flange
of the intake manifold (1), which accommodate the sealing section
(20) of the first sealing means (19).
7. The system as recited in one of claims 1 through 6, wherein
projections are situated on the sealing ribs (19) which, in
particular, run in one direction, i.e., essentially parallel to the
sealing plate (3).
8. The system as recited in one of claims 1 through 7, wherein the
moving section (21) is situated between the sealing section (20)
and the sealing plate (3).
9. The system as recited in one of claims 1 through 8, wherein the
first connecting means (9) each have a head (11) which rests on a
support section (15) of the socket (10) using the elastic element
(13).
10. The system as recited in claim 9, wherein the support section
(15) is situated on a level which is offset toward the intake
manifold (1) parallel to the sealing plate (3).
11. The system as recited in one of claims 1 through 10, wherein
the sockets (10) have recesses (16) for the first connecting means
(9), the first connecting means (9) extending through the
recesses.
12. The system as recited in claim 11, wherein the first connecting
means (9) are routed through the elastic elements (13) in the
recesses (16).
13. The system as recited in one of claims 1 through 12, wherein
second sealing means (25) intended to rest on the cylinder head (2)
are provided on another side (24) of the sealing plate (3).
14. The system as recited in one of claims 1 through 13, wherein
the sealing plate (3) has passages (26) for the second connecting
means.
Description
[0001] The present invention relates to a system for the gas-tight
mounting of an intake manifold having a connector flange on the
cylinder head of an internal combustion engine.
[0002] A system for the gas-tight mounting of an intake manifold
having a connector flange on the cylinder head of an internal
combustion engine is known from EP 0 601 285 B1. This system has a
gasket made of elastomer material which can be attached to the side
of the intake manifold flange facing the cylinder head. The known
gasket has additionally at least two sealing surfaces which merge
into one piece and which, during usage for the intended purpose,
hermetically enclose at least two intake pipes of the intake
manifold around the perimeter. However, the known system has the
disadvantage that undesirable vibrations of the cylinder head of an
internal combustion engine are transferred to the intake
manifold.
[0003] The object of the present invention is to provide a system
for the gas-tight mounting of an intake manifold on a cylinder head
in which the transfer of vibrations between the engine and the
intake pipe is reduced.
[0004] The object is achieved via a system for the gas-tight
mounting of an intake manifold having a connector flange on the
cylinder head of an internal combustion engine, including a sealing
plate which is situated between the connector flange of the intake
manifold and the cylinder head and which has at least one air
passage for the at least one intake pipe of the intake manifold,
including first connecting means, which are situated in sockets
formed in or on the sealing plate, for connecting the sealing plate
to the intake manifold and second connecting means for connecting
the connector flange and/or the sealing plate to the cylinder head,
first sealing means being provided on one side of the sealing plate
around the at least one air passage for attachment to the intake
manifold, at least one elastic element being provided which acts
between the first connecting means and the sealing plate, the first
sealing means being designed as sealing ribs which have a sealing
section and a moving section, and the first connecting means
including the at least one elastic element and the first sealing
means including the sealing section and the moving section being
designed and situated in such a way that a vibratory relative
movement is made possible between the sealing plate and the intake
manifold.
[0005] Due to the design according to the present invention, it is
possible to substantially reduce the transfer of vibrations between
two components, in this case the cylinder head of an internal
combustion engine and the intake manifold. Due to the present
invention, it is in particular possible to decouple the vibrations
to a large extent and still achieve a good seal between the intake
manifold and the cylinder head. This is achieved according to the
present invention in particular by designing the first sealing
means as sealing ribs having a sealing section and a moving section
and by placing the first connecting means on the sealing plate
using elastic elements.
[0006] Furthermore, according to the present invention the sealing
plate is situated at a distance from the connector flange of the
intake manifold. This design makes it possible to achieve good
decoupling of the vibrations between the cylinder head and the
intake pipe.
[0007] Despite the vibratory relative movement between the sealing
plate and the intake manifold, a particularly good seal is achieved
in that the sealing ribs are stressed by compression means which
are situated on the intake manifold. These compression means,
acting on the sealing section of the sealing ribs, make it possible
to achieve an excellent seal.
[0008] A further improvement is achieved in that, in the installed
state, the moving section is essentially stress-free or is stressed
to a lesser extent than the sealing section which is stressed by
the compression means. Improved vibration insulation or vibration
decoupling is achieved, without jeopardizing the sealing effect of
the system according to the present invention, due to the fact that
the moving section is essentially stress-free or stressed only to a
lesser extent.
[0009] Furthermore, the compression means advantageously stress the
sealing section in one direction, i.e., essentially parallel to the
sealing plate. This not only makes a good seal possible, but also
provides particularly good vibration insulation.
[0010] Furthermore, according to the present invention the
compression means are grooves, situated on the mounting flange of
the intake manifold, which accommodate the sealing section of the
first sealing means.
[0011] A particularly good seal is achieved in that the sealing
ribs have projections which, in particular, run in one direction,
i.e., essentially parallel to the sealing plate.
[0012] Furthermore, according to the present invention the moving
section is advantageously situated between the sealing section and
the sealing plate.
[0013] According to a particularly advantageous embodiment of the
present invention the first connecting means has a head which rests
on a support section of the socket via the elastic element. The
elastic element, acting between the socket and the connecting
means, reduces the vibration transfer from the sealing plate to the
intake manifold.
[0014] According to a refinement of the present invention, the
support section is situated on a plane which is offset toward the
intake manifold parallel to the sealing plate. In particular, the
head of the first connecting means is countersunk and a flat design
of the system according to the present invention is thereby
achieved.
[0015] Furthermore, according to the present invention the sockets
have recesses for the first connecting means, the first connecting
means extending through them.
[0016] Particularly good vibration decoupling in different
directions is achieved by routing the first connecting means in the
first recess through the elastic elements.
[0017] A particularly good seal is also achieved by providing
second sealing means on another side of the sealing plate for
attachment to the cylinder head.
[0018] Furthermore, it has proved to be of value for the sealing
plate to have passages for the second connecting means.
[0019] An advantageous embodiment of a system according to the
present invention is explained in greater detail in the following
based upon the drawing.
[0020] FIG. 1 shows a top view of a sealing plate according to the
present invention;
[0021] FIG. 2 shows a section through the sealing plate illustrated
in FIG. 1 along line C-C in the installed state;
[0022] FIG. 3 shows a section through the sealing plate illustrated
in FIG. 1 along line A-A;
[0023] FIG. 4 shows a section through the sealing plate illustrated
in FIG. 1 along line B-B;
[0024] FIG. 5 shows a section through the sealing plate illustrated
in FIG. 1 along line C-C;
[0025] FIG. 6 shows a section through the sealing plate illustrated
in FIG. 1 along line D-D, and
[0026] FIG. 7 shows an enlarged illustration of a detail from FIG.
3.
[0027] A system for the gas-tight mounting of an intake manifold 1
having a connector flange on cylinder head 2 of an internal
combustion engine is illustrated in the figures. The system
according to the present invention has a sealing plate 3 which may
be situated between the connector flange of intake manifold 1 and
cylinder head 2. While sealing plate 3 is illustrated individually
in FIGS. 1 and 3 through 7, the detailed illustration of sealing
plate 3 in FIG. 2 shows it in its assembled state in which it is
situated between intake manifold 1 and cylinder head 2 of an
internal combustion engine 2. In the embodiment illustrated in FIG.
1, sealing plate 3 has four air passages 4, 5, 6, 7 for the four
intake pipes of intake manifold 1.
[0028] First connecting means 9 are provided for connecting sealing
plate 3 to intake manifold 1, the connecting means being situated
in a socket 10 formed in sealing plate 3. In the embodiment
illustrated in FIG. 2, the first connecting means are designed as a
bolt having an extended head 11 on its side facing cylinder head 2
and having a widened section 12 at its end facing connector flange
1. Other suitable connecting means, screws having a thread, for
example, may also be used instead of bolt 9 shown in FIG. 2. These
screws may either be screwed directly into the connector flange,
or, together with a nut, form a connection between sealing plate 3
and connector flange 1.
[0029] An elastic element 13 for first connecting means 9 is
provided in the area of socket 10. Elastic element 13 is situated
between first connecting means 9 and sealing plate 3 in such a way
that an elastically resilient connection is created between sealing
plate 3 and connector flange 1. For this purpose, head 11 of
connecting means 9 rests on elastic element 13 which is situated on
the bottom of socket 10.
[0030] Socket 10 has a cylindrical section 14 which is situated on
the side of sealing plate 3 facing intake manifold 1. This
cylindrical section 14 is delimited by a support section 15 at its
end facing intake manifold 1; head 11 of first connecting means 9
may rest on the support section. Support section 15 is situated on
a plane which is offset toward intake manifold 1 parallel to
sealing plate 3. This results in head 11 of first connecting means
9 being countersunk. Furthermore, socket 10 has recesses 16,
through which first connecting means 9 extend. Guide section 7 of
elastic elements 13 extends in the area of recesses 16 in such a
way that first connecting means 9 are guided through elastic
elements 13 in recess 16.
[0031] Overall, sealing plate 3, made of metal, shown in FIG. 1 has
three sockets 10, each having one recess 16, sockets 10 each being
situated between air passages 4, 5 or 5, 6 or 6, 7,
respectively.
[0032] On its one side 18 around air passages 5, 6, 7, 8, sealing
plate 3 has sealing means 19 intended to rest on intake manifold 1.
First sealing means 19 each extend around an air passage 5, 6, 7, 8
in a closed line. First sealing means 19 are designed as sealing
ribs which have a sealing section 20 and a moving section 21.
According to the present invention, the sealing ribs are made of an
elastomer which is attached to sealing plate 3 by vulcanization.
For achieving a good seal, sealing ribs 19 are stressed by
compression means 22 situated on intake manifold 1. In the
embodiment shown in FIG. 2, compression means 22 are designed as
grooves which are formed in the connector flange of intake manifold
1 and which accommodate sealing sections 20 of first sealing means
19. Compression of sealing sections 20 via grooves 22 is achieved
by grooves 22 having an inside dimension which is slightly smaller
than the outside dimension of the sealing ribs prior to insertion
into groove 22. In this embodiment, sealing sections 20 are
stressed by compression means 22 in one direction, i.e.,
essentially parallel to sealing plate 3.
[0033] Moving section 21 is situated between sealing section 20 and
sealing plate 3. In the installed state, moving section 21 is
essentially stress-free or is stressed to a lesser extent than
sealing section 21 stressed by compression means 22.
[0034] For achieving a better seal, sealing means 19 have
projections 23 which run in one direction, i.e., essentially
parallel to sealing plate 3 and extend in particular along the
entire periphery of first sealing means 19.
[0035] As can be seen in FIG. 2, sealing plate 3 is situated at a
distance from the connector flange of intake manifold 1. First
connecting means 9, sockets 10 for first connecting means 9
including elastic element 13, and first sealing means 19 are
designed and situated in such way that a vibratory relative
movement is made possible between sealing plate 3 and intake
manifold 1. Decoupling of vibrations between cylinder head 2 of an
internal combustion engine and intake manifold 1 may be achieved or
improved due to this vibratory relative movement.
[0036] To achieve a good seal between sealing plate 3 and cylinder
head 2, sealing plate 3 has, on its other side 24, second sealing
means 25 intended to rest on cylinder head 2. Second sealing means
25 are made of an elastomer which is attached to sealing plate 3 by
vulcanization. Second sealing means 25 each extend around an air
passage 4, 5, 6, 7 in a closed line.
[0037] Furthermore, sealing plate 3 has passages 26 for second
connecting means with which the connector flange of intake manifold
1 or sealing plate 3 may be directly connected to cylinder head 2.
A total of eight passages 26 are provided in the embodiment
illustrated in FIG. 1.
* * * * *